Adjustable wrench



Oct. 7 1924. 1,510,634

J. R. SIEGER v ADJUSTABLE WRENCH Filed June 18. 1 923 gnou/Hoz Patented ct. 7, 1924.

i e if, y ,2.1 i l @A 1 rADJ'USTABLE WRENCH.

Application filed .Tune 18, 1923i. Serial No. 646,062.

To all whom t may concer/n.: Y

' Be it known that I, JOHNI R..SI EGER,a

of Minneapolis, in the county. of Hennepin and State of Minnesota, have invented certainfnew and useful Improvements in Ad justable lWrenches, of which, the following is a specification.

One object of my invention is to provide an improved form of wrench that can be' quickly adjusted to t any nutor pipe on which it is used.

Another object is to provide a locking arrangement between the fixed and loose jaws that will allow a quick take-up between the two jaws.

Another object is to provide a locking arrangement such that will allow a quick take-up between the jaws when the first pressure is applied on the pipe or nut and then a slower take-up grip as increased pressure is applied.

Another object is to pro-vide improved means for releasing the quick take-up mechanism so the wrench may be readily set to t any pipe or nut.

With these and incidental obj eets in view the invention consists of certain novel features of construction and combination of parts, the essential elements of which are hereinafter described with reference to the drawing which accompanies and forms a part 0f this speciication.

In the drawing, Figure l is a side elevation of a wrench embodying my invention;

Figure 2 is a similar view of the loose jaw and handle; and Figure 3 is a bottom view of the part shown in Figure 2 to clearly indicate the position of the dog in the loose J As shown in the drawing, the wrench consists of the fixed head l having a rack bar 2 extending at right angles, thereto, said rack bar having rack teeth 3 thereon. The saddle 4: loosely encloses the rack bar 2 and is pivoted at 5 to the loose jaw 6, which has the handle 7 extending therefrom. j The loose jaw is cut out at 8, as better shown in Figures 2 and 3, and the dog 9, which engages the rack teeth 3, is pivoted to the loose jaw at l0. The pin 1l, which is fixed in the dog 9, extends through the' aperture l2 in the saddle 4: to allow the dog to be released by the fingers. The spring 13, positioned ybetween the dog and the loose jaw liandleu-serves to keep-'the dognor- `mally in engagement with the rack teeth 3. citizen ofthe United States, and a resident When the wrench is4k to be applied toa nut or pipe the dog 9 is released from the rack teeth sothe jaws ,will loosely pass over the nut or pipe, then the jaws are` moved towards y,the pipe from side to side, the dog. `catchin the last tooth that it can vengage when looth jaws are in contact with the nut or pipe. When pressure is then applied by rotating the handle 7, it will be noted that inasmuch as the dog is pivoted to the loose jaw, intermediate o-f its engagement with the rack teeth and the point where the saddle is pivoted to the loose jaw, and the dog engages the rack teeth forward of or adjacent to the normal plane passing through the pivot point of the'saddle, the

saddle will creep towards the fixed jaw,v

this motion being comparatively rapid, thus causing a quick grip on the pipe or nut to be turned the expression forward of as used in reference to the location of the engagement point of the dog and the rack teeth,

meaning toward the jaws of the wrench. o vAfter the full motion of the saddle towards the fixed jaw has occurred the locking ae# tion of the dog with the teeth is of the toggle type, so it is impossible for the dog to'become disengaged, as the more firmly the pipe is gripped, the more firmly the dog holds in the teeth. i

In addition there is the ordinary pivot,` action at the point 5 which tends tobring the fixed and loose jaws closer together across the pipe or nut as is the case with the ordinary pipe wrench, this action v'being independent of the gripping action of the saddle.

While I have described my invention and illustrated it in one particular design, I

do not wish it to be understood that I limit l. In an adjustable wrench the combination with a iixed jaw having a rack bar with rack teeth thereon extending therefrom, of

Qty

a saddle passing about said rack bar, a f

loose jaw pivoted to said saddle, a dog pivoted to said loose jaw, and cooperating with said rack teeth, at a point forwa'rd of the normal plane of the pivot between said Cil loose jaW and said saddle, and means extending through an aperture in said saddle for releasing said dog.

2. In an adjustable Wrench the oombination With a lixed jaw having a rack bar With rack teeth,l thereon extendingtherefrom of a loose jaw, pivoted means 'holding said rack bar and said loose jaw in operative relation, and a dogpivoted to said loose jaw (1o-operating with said rack teeth forward of said pivoted means.

3. ln an adjustable Wrench theJ combination with a iixed aw having a rack bar with rack teeth thereon extending therefrom of a loose jaw, means pivoted to said loose jaw and cooperating with said rack bar, to hold said jaw in close juxtaposition, and means carried by said loose jaw, intermediate ot said fixed aw and said rack bar for looking,- said jaws in operative position said last named means coaoting With said teeth for- Ward of said pivoted means.

4. In an adjustable Wrench the combination with a fixed aW and a rack bar with rack teeth thereon extending therefrom, of a loose jaw having a handle extending therefrom, a saddle slidably surroundingsaid rack bar and pivoted to said loose jaw, a spring actuated dog pivoted in said loose javv and coasting` with said rack teeth, a pin Carried in said dogextending through apen tures in said saddle for releasing said dog, said dog coaoting with said rack teeth at a point forward oi' the normal plane passing through the pivot of said saddle. Y

JOHN R. SEGER. 

